138000669 has 8 divisors (see below), whose sum is σ = 184276992. Its totient is φ = 91862400.

The previous prime is 138000661. The next prime is 138000673. The reversal of 138000669 is 966000831.

138000669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138000669 - 2³ = 138000661 is a prime.

It is a super-2 number, since 2×138000669² = 38088369288895122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138000661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32157 + ... + 36194.

It is an arithmetic number, because the mean of its divisors is an integer number (23034624).

Almost surely, 2^138000669 is an apocalyptic number.

It is an amenable number.

138000669 is a deficient number, since it is larger than the sum of its proper divisors (46276323).

138000669 is an equidigital number, since it uses as much as digits as its factorization.

138000669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69027.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 138000669 is about 11747.3685989672. The cubic root of 138000669 is about 516.7657602972.

The spelling of 138000669 in words is "one hundred thirty-eight million, six hundred sixty-nine", and thus it is an aban number.